Patents Assigned to Polysius AG
  • Roller mill
    Patent number: 4880172
    Abstract: The invention relates to a roller mill with two rollers driven in opposite directions, in which the two gear driven cases are connected directly to one another by a torque support containing a flexible member.
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: November 14, 1989
    Assignee: Krupp Polysius AG
    Inventors: Otto Heinemann, Heinz-Dieter Baldus, Norbert Schroder
  • Method for the production of cement clinker from semi-wet raw material
    Patent number: 4878949
    Abstract: The invention relates to a method and to apparatus for the production of cement clinker by the semi-wet process, in which a two-stage preheater supplied with additional fuel and a short rotary kiln are used and exhaust air from the cooler is delivered directly to the drying zone. In this way, even if the moisture content of the filter cake varies, it is possible to operate the kiln plant with a constant degree of deacidification and to ensure a stable kiln operation.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: November 7, 1989
    Assignee: Krupp Polysius AG
    Inventor: Georg Unland
  • Method and apparatus for crushing brittle material for grinding
    Patent number: 4875628
    Abstract: The invention relates to a method and to apparatus for crushing brittle material for grinding using a material bed roll mill, in which at least a proportion of the branch stream returned to the roll gap is dried to such an extent that a mixed moisture content which lies below a critical moisture content is produced in the roll gap. In this way it is possible even for material for grinding which has a high moisture content and above a critical moisture value has a tendency to sticking and/or caking on to be crushed satisfactorily.
    Type: Grant
    Filed: May 6, 1988
    Date of Patent: October 24, 1989
    Assignee: Krupp Polysius AG
    Inventors: Osbert Knobloch, Manfred Muller
  • Apparatus and method for the heat treatment of fine-grained material
    Patent number: 4861265
    Abstract: The invention relates to apparatus and to a method for the heat treatment of fine-grained material using a multi-stage cyclone preheater and a combustion chamber supplied with tertiary air from the cooler, in which the branched part of the tertiary air pipe extends upwards and the material discharged from the second-lowest stage of the cyclone preheater is introduced into one branch pipe at a point which lies lower than the point at which this branch pipe is connected to the combustion chamber. In this way good dispersal of the material which is delivered pneumatically to the combusion chamber and excellent combustion conditions are achieved at the same time as a considerable reduction in the overall height of the entire cyclone preheater.
    Type: Grant
    Filed: October 13, 1988
    Date of Patent: August 29, 1989
    Assignee: Krupp Polysius AG
    Inventors: Manfred Durr, Georg Unland, Gunter Driemeier, Karl Krutzner, Heinz-Herbert Schmits, Michael von Seebach, Otto Heinemann, Wolfgang Rother, Dieter Dreyer
  • Method and burner for burning fuel
    Patent number: 4846666
    Abstract: The invention relates to a method and a burner in which a proportion of the fuel is delivered via an outer annular duct and accelerated at the outlet end to a high speed, while a further proportion of the fuel is delivered via a second, inner annular duct and retarded at the outlet end to a slow speed. This results in stabilization and regulation of the principal flame by a permanent pilot flame.
    Type: Grant
    Filed: April 27, 1988
    Date of Patent: July 11, 1989
    Assignee: Krupp Polysius AG
    Inventors: Hans Bilawa, Eberhard Neumann
  • Apparatus for the heat treatment of fine-grained material
    Patent number: 4840561
    Abstract: The invention relates to apparatus for the heat treatment of fine-grained material with a rotary drum furnace, a preheater and a combustion chamber for precalcination, in which the cover of the combustion chamber has a central recess which serves for spin stabilization and has the fuel supply provided in its base. Such a combustion chamber is distinguished by improved combustion conditions, particularly an improved mode of combustion.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: June 20, 1989
    Assignee: Krupp Polysius AG
    Inventors: Georg Unland, Gunter Driemeier
  • Method of determining the filling capacity of and calibrating a pneumatic conveying arrangement
    Patent number: 4838071
    Abstract: The invention relates to a method of determining the filling capacity of a pneumatic conveying arrangement by three pressure measurements. The invention also relates to a method of calibrating a pneumatic conveying arrangement using this determination of the filling capacity. These measurements are conveying pressure, pressure at the top of the vessel from which the material is conveyed, and pressure at the top of the vessel to which the material is conveyed.
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: June 13, 1989
    Assignee: Krupp Polysius AG
    Inventors: Ernst Hoppe, Franz-Josef Adrian
  • Apparatus for the heat treatment of fine-grained material
    Patent number: 4815970
    Abstract: The invention relates to apparatus for the heat treatment of fine-grained material having a rotary drum furnace, a preheater, a cooler, and a combustion chamber for precalcination of the material. Exhaust air from the cooler is delivered on the one hand to the combustion chamber and on the other hand via two pipes directly to the furnace exhaust gas pipe, and connections for the supply of fuel and preheated material are provided in these latter pipes shortly upstream from the point at which they open into the furnace exhaust gas pipe.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: March 28, 1989
    Assignee: Krupp Polysius AG
    Inventors: Georg Unland, Gunter Driemeier
  • Method and apparatus for the heat treatment of fine-grained material
    Patent number: 4808108
    Abstract: The heat treatment of fine-grained material wherein two quantities of fuel are delivered to a precalcination zone at two different levels. The first quantity of fuel is delivered at a lower level nearer the combustion zone and the oxygen content of the gases passing through this region of the precalcination zone are such that in this region a substoichiometric combustion takes place and a CO content between 0.05% and 1% is established. As a result a reducing decomposition of the NO.sub.x content of the exhaust gases from the combustion zone takes place.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: February 28, 1989
    Assignee: Krupp Polysius AG
    Inventors: Peter Tiggesbaumker, Manfred Durr, Jurgen Wurr, Karl Krutzner, Wolfgang Rother, Karl Menzel, Frank Schaberg, Heinrich Klockenbusch, Georg Unland, Gunter Driemeier
  • Method and apparatus for utilizing the heat energy of domestic and commercial refuse
    Patent number: 4797091
    Abstract: The invention relates to a method for utilizing the heat energy of domestic and commercial refuse in a rotary kiln installation. The prepared crude refuse is degassed in a pyrolysis reactor and the pyrolysis gas produced is delivered to the main burner of the rotary kiln, optionally using primary fuel. For optimum and economic production of the pyrolysis gas crushed refuse is dried pneumatically with the aid of exhaust air from the cooler and is delivered to the pyrolysis reactor. The pyrolysis reactor is heated indirectly to a low temperature with hot secondary air from the kiln outlet head and the pyrolysis gas produced is delivered together with used secondary air to the main burner of the kiln.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: January 10, 1989
    Assignee: Krupp Polysius AG
    Inventor: Eberhard W. Neumann
  • Spiral air sifter having air regulation
    Patent number: 4792393
    Abstract: The invention relates to a sifter in which the spiral for delivery of the air for sifting is divided into a plurality of channels lying one above another in which elements for setting the quantity of sifting air delivered to the individual channels are provided. In such a sifter the quantity of sifting air in the individual regions of the sifting chamber can be optimally adapted to the requirements, which leads to a substantial improvement in the degree of separation.
    Type: Grant
    Filed: June 19, 1987
    Date of Patent: December 20, 1988
    Assignee: Krupp Polysius AG
    Inventors: Gotthardt Blasczyk, Hubert Eickholt, Otto Heinemann, Norbert Bredenholler, Ludger Kimmeyer, Peter Tiggesbaumker, Michael von Seebach, Heinrich Henne
  • Method and apparatus for the two-stage crushing of brittle material for grinding
    Patent number: 4783011
    Abstract: A method and apparatus for the two-stage crushing of brittle material comprising a roll mill and a mill connected downstream thereof, the output of the second mill being delivered to a sifter in which a second branch stream of the grit obtained in the sifting operation is returned to the roll mill and a further branch stream is returned to the second mill. A first control circuit keeps the sum of the quantity of fresh material and the quantity of grit constant, while a second control circuit divides the quantity of grit into two branch streams in such a way that the drive power of the roll mill remains constant.
    Type: Grant
    Filed: December 10, 1987
    Date of Patent: November 8, 1988
    Assignee: Krupp Polysius AG
    Inventors: Gotthardt Blasczyk, Norbert Patzelt, Heinz-Georg Mersmann, Franz J. Adrian, Hardy Kropf
  • Method and apparatus for the two-stage crushing of brittle material for grinding
    Patent number: 4783012
    Abstract: A method and apparatus for the two-stage crushing of brittle material comprising a roll mill and a second mill downstream thereof, the output of the second mill being delivered to a sifter. The quantity of grit obtained in the sifting operation is divided between the roll mill and the second mill in such a way that the sum of the quantity of fresh material and the quantity of grit delivered to the roll mill remains constant.
    Type: Grant
    Filed: December 10, 1987
    Date of Patent: November 8, 1988
    Assignee: Krupp Polysius AG
    Inventors: Gotthardt Blasczyk, Norbert Patzelt, Heinz-Georg Mersmann, Franz J. Adrian, Hardy Kropf
  • Reciprocating grate drive apparatus
    Patent number: 4778381
    Abstract: The invention relates to apparatus for driving a thrust grate cooler, in which the division of force is provided on the low-moment side between and electric motor and a reduction gear system. Such a construction is distinguished by substantially reduced expenditure on construction and manufacture.
    Type: Grant
    Filed: August 17, 1987
    Date of Patent: October 18, 1988
    Assignee: Krupp Polysius AG
    Inventors: Otto Heinemann, Heinz-Herbert Schmits
  • Sample divider
    Patent number: 4771641
    Abstract: A sample divider for fine-grained loose material samples contains - arranged symmetrically below one another - a sample delivery pipe, a divider and collecting vessels for sub-samples provided below the divider. The divider is constructed as a divider cone which has distributed over its base surface sample distribution holes to which a plurality of first sub-sample pipes is connected, below which are arranged a collecting funnel, a second divider cone and below that a plurality of second sub-sample pipes which are connected to the collecting vessels. In this way a starting sample quantity can be divided up into a comparatively large number of sub-sample quantities extremely well and reliably with the sample only passing through the sample divider once.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: September 20, 1988
    Assignee: Krupp Polysius AG
    Inventors: Herbert Beltrop, Helmut Kronemeyer
  • Side scraper for a heap of loose material
    Patent number: 4762220
    Abstract: The invention relates to a side scraper which serves for the discharge of loose material from a heap of loose material and in which the free space between the surface of the heap to be cleared and the upper face of the scraper scoops is covered by a support element. In this way the mound of material which forms in the lower region of the heap on the cutting side of the scraper conveyor in the known constructions is avoided.
    Type: Grant
    Filed: January 5, 1987
    Date of Patent: August 9, 1988
    Assignee: Krupp Polysius AG
    Inventor: Hubert Lutke
  • Cooling apparatus
    Patent number: 4762489
    Abstract: The cooling apparatus which is preferably constructed in the form of a grate cooler contains in its material inlet portion a material transfer arrangement with at least two rows lying behind one another of transversely extending air boxes which can be supplied with air and have upper surfaces with air holes. The clear opening width of these air holes (area for the air to pass through) is adjustable, so that all air boxes can be supplied independently of one another with adjustable quantities of air. In this way the streams of cooling air can be adapted to differing local ranges of grain sizes of the clinker on the material transfer arrangement.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: August 9, 1988
    Assignee: Krupp Polysius AG
    Inventors: Heinz-Herbert Schmits, Hermann Niemerg
  • Apparatus for heat exchange between gas and fine-grained material
    Patent number: 4756093
    Abstract: The invention relates to apparatus for heat exchange between gas and fine-grained material containing a plurality of cyclone-like separators which are arranged one above the other and have bent central axes. Such a heat exchanger is distinguished by a particularly compact construction and a good separating capacity of the individual separators.
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: July 12, 1988
    Assignee: Krupp Polysius AG
    Inventors: Otto Heinemann, Heinz-Herbert Schmits
  • Coke oven door
    Patent number: 4741808
    Abstract: The invention relates to a coke oven door with a sealing element which consists of a metal sealing strip and a crowned metal diaphragm. When the sealing strip is pressed onto the door frame a wedge-shaped gap is produced between the sealing strip and the door frame into which the tarry condensation residues pass as a result of the movement of the sealing strip and ensure a good seal.
    Type: Grant
    Filed: September 18, 1986
    Date of Patent: May 3, 1988
    Assignee: Krupp Polysius AG
    Inventors: Wilhelm Holz, Helmut Lukaszewicz, Friedhelm Haaf, Mutien-Marie Renverse
  • Matrix-ring magnetic separator
    Patent number: 4737294
    Abstract: The invention relates to a matrix ring magnetic separator the induction bodies of which are formed by sieve nettings which are arranged vertically and stacked behind one another in the direction of the magnetic field in such a way that the intersections of the wires of one sieve netting are located on the free field of the adjacent sieve netting resulting in the formation of sieve netting assemblies which are springy in themselves in the direction of the magnetic field. Even at very high field strength gradients such a magnetic separator is distinguished by good possibilities for cleaning and can also be produced economically.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: April 12, 1988
    Assignee: Krupp Polysius AG
    Inventor: Karl-Heinz Kukuck